How to set up Sleep mode on a Mac that has bus-powered external storage<article>
<section class="page">
<p>An external hard drive or SDD can be very useful with a Mac that has a low-capacity internal drive. Some Mac laptop users routinely keep an external drive plugged in, and they may have encountered a problem with unmounting that can be easily solved with sleep settings found in the Energy Saver or Battery preference pane (depending on your version of macOS).</p><p>If your drive has its own power adapter that plugs into an AC outlet, you almost certainly haven’t encountered this situation with either a laptop or desktop Mac. The AC power keeps the drive running even when your Mac goes to sleep.</p><p>However, if you’re using a bus-powered drive—one that gets its juice from a USB or Thunderbolt 3 port of your Mac, or a connected hub—you can wind up with settings that power down the drive and thus unmount it without proper safeguards.</p><p class="jumpTag"><a href="/article/3608432/how-to-set-up-sleep-mode-on-a-mac-that-has-bus-powered-external-storage.html#jump">To read this article in full, please click here[/url]</p></section></article>
Source:
How to set up Sleep mode on a Mac that has bus-powered external storage
